Operating systems

Perl Math::FastGF2 is a Perl math module for performing arithmetic on Galois Fields. Galois Fields have applications in Cryptography (such as the AES encryption system or various threshold systems for sharing secrets) and Error-correcting Codes (eg, Rabin's Information Dispersal Algorithm or Reed-Solomon Codes). It currently implements all the primitive maths operations needed to work with Galois Field polynomials. A set of demo scripts is included that implements Shamir's Secret Sharing algorithm using the module.

JWordTrainer is a generic tool that helps you to memorize words for basically any pair of languages. You must first add the words from your individual lessons to input files, then specify how many words from which input files you want to be asked. The program will randomly show words and a button that shows the translation. Pali-English is included as an example language pair, along with a README that explains in detail how to add new words and languages.

Running sccs2rcs in a directory with an SCCS subdirectory will convert all the SCCS files to corresponding RCS master files in a new RCS directory; the SCCS data itself is accessed read-only. It will complain and terminate if any of the SCCS files are checked out, or if the RCS directory already exists and is non-empty. If the directory contains snapshot auxiliary data produced by Emacs VC mode for tagging, that will be used too.

deheader analyzes C and C++ files to determine which header inclusions can be removed while still allowing them to compile. This may result in substantial improvements in compilation time, especially on large C++ projects. It also sometimes exposes dependencies and cohesions of which developers were unaware.

This is a simple XBMC add-on to generate a random waltz theme following Mozart's Musical Dice Game (Musikalisches Würfelspiel). Each waltz consist of two parts: a minuet (16 bars of music) and a trio (another 16 bars). Mozart wrote a total of 272 pieces, which get randomly combined to produce a unique piece of music every time (originally the combination was obtained using a dice roll, hence the name).

Nibble Framework is a plug-in based framework that enables fast development of small to medium Web sites. It is designed using PHP 5.3 functionality such as namespaces. Web sites and applications are developed using collections of plug-ins that can be reused and shared with other developers. Plug-ins can be installed using a drag and drop interface. Many classes are provided, including the Nibble Forms class, Twitter feeds class, and RedBean PHP ORM.

da is a command line script for creating and managing directory paths. You can associate a given directory with a small alias, which is faster to type and easier to remember. That shortcut can be substituted when changing directory by using the "j" command.